ephedrine vs alkaloid

ephedrine and alkaloid both are nouns.

Word	Noun	Adjective	Verb	Adverb
ephedrine	Yes	No	No	No
alkaloid	Yes	No	No	No

As nouns, alkaloid is a hypernym of ephedrine; that is, alkaloid is a word with a broader meaning than ephedrine:

ephedrine: white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma
alkaloid: natural bases containing nitrogen found in plants

Other hypernyms of ephedrine include bronchodilator.

ephedrine (noun)	alkaloid (noun)
white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma	natural bases containing nitrogen found in plants